ZDI-CAN-31684: ZDI-26-836: Linux Kernel CIFS File System Use-After-Free Privilege Escalation Vulnerability
Published Oct 29, 2026
·Updated
This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.2. The following CVEs are assigned: CVE-2026-72315.
Event History
Oct 29, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Frequently Asked Questions
1
Who is realistically exposed to exploitation?
Affected Linux Kernel installations are exposed only to local attackers. The attacker must already be able to execute high-privileged code on the target system.
2
What access does an attacker need before exploiting this issue?
The attacker needs the ability to execute high-privileged code on the target system. The provided information does not describe a remote exploitation path.